chore: add check to install-and-build script to disallow yarn 1

This is because if one has a system that has yarn 1 / yarn classic installed, some weird errors pop up during instllatoin and build. This script will catch the issue early and provice a user friendlier feedback

Author: nytamin

scripts/install-and-build.mjs

@@ -1,12 +1,41 @@
+import cp from "child_process";
 import process from "process";
 import concurrently from "concurrently";
 import { EXTRA_PACKAGES, config } from "./lib.js";
 
 function hr() {
 	// write regular dashes if this is a "simple" output stream ()
 	if (!process.stdout.hasColors || !process.stdout.hasColors())
-		return '-'.repeat(process.stdout.columns ?? 40)
-	return '─'.repeat(process.stdout.columns ?? 40)
+		return "-".repeat(process.stdout.columns ?? 40);
+	return "─".repeat(process.stdout.columns ?? 40);
+}
+function exec(cmd) {
+	return new Promise((resolve, reject) => {
+		cp.exec(cmd, (err, stdout, stderr) => {
+			if (err) reject(err);
+			resolve({ stdout, stderr });
+		});
+	});
+}
+const yarnVersion = await exec("yarn -v");
+
+// Require yarn > 1:
+if (
+	yarnVersion.stdout.startsWith("0.") ||
+	yarnVersion.stdout.startsWith("1.")
+) {
+	console.error(
+		"It seems like you're using an old version of yarn. Please upgrade to yarn 2 or later"
+	);
+	console.error(`Detected yarn version: ${yarnVersion.stdout.trim()}`);
+	console.error(`--`);
+	console.error(`Tip:`);
+	console.error(
+		`To uninstall yarn classic, you can find where it's installed by running 'which yarn' or 'where yarn'`
+	);
+	console.error(`After you have uninstalled it, run 'corepack enable'`);
+
+	process.exit(1);
 }
 
 try {
@@ -41,9 +70,9 @@ try {
 	console.log(" 🪛  Build packages...");
 	console.log(hr());
 
-	const buildArgs = ['--ignore @sofie-automation/webui']
+	const buildArgs = ["--ignore @sofie-automation/webui"];
 	if (config.uiOnly) {
-		buildArgs.push(...EXTRA_PACKAGES.map((pkg) => `--ignore ${pkg}`))
+		buildArgs.push(...EXTRA_PACKAGES.map((pkg) => `--ignore ${pkg}`));
 	}
 
 	await concurrently(